/*
 *
 * This file is part of QMapControl,
 * an open-source cross-platform map widget
 *
 * Copyright (C) 2007 - 2008 Kai Winter
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with QMapControl. If not, see <http://www.gnu.org/licenses/>.
 *
 * Contact e-mail: kaiwinter@gmx.de
 * Program URL   : http://qmapcontrol.sourceforge.net/
 *
 */

#ifndef MAPNETWORK_H
#define MAPNETWORK_H

#include "qmapcontrol_global.h"
#include <QObject>
#include <QDebug>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkProxy>
#include <QAuthenticator>
#include <QVector>
#include <QPixmap>
#include <QMutex>
#include "imagemanager.h"

/**
        @author Kai Winter <kaiwinter@gmx.de>
 */
namespace qmapcontrol
{
class ImageManager;
class QMAPCONTROL_EXPORT MapNetwork : QObject
{
    Q_OBJECT

public:
    MapNetwork(ImageManager *parent);
    ~MapNetwork();

    void loadImage(const QString &host, const QString &url);

    /*!
     * checks if the given url is already loading
     * @param url the url of the image
     * @return boolean, if the image is already loading
     */
    bool imageIsLoading(QString url);

    /*!
     * Aborts all current loading threads.
     * This is useful when changing the zoom-factor, though newly needed images loads
     * faster
     */
    void abortLoading();
    void setProxy(QString host, int port, const QString username = QString(),
                  const QString password = QString());

    /*!
     *
     * @return number of elements in the load queue
     */
    int loadQueueSize() const;

    /*!
     *
     * @return next free http downloader thread
     */
    QNetworkAccessManager *nextFreeHttp();

    /*!
     * sets the disk cache for each network manager
     * @param qCache the disk cache object to set
     */
    void setDiskCache(QNetworkDiskCache *qCache);

private:
    Q_DISABLE_COPY(MapNetwork)

    ImageManager *parent;
    QNetworkAccessManager *http;
    QList<QNetworkReply *> replyList;
    QMap<QString, QString> loadingMap;
    qreal loaded;
    mutable QMutex vectorMutex;
    bool networkActive;
    bool cacheEnabled;

private slots:
    void requestFinished(QNetworkReply *reply);
};
}
#endif
